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May 3, 2020 10:00 AM CST
|So, my black locust trees and others were leafing out earlier in April. Leaves died and new ones are just starting to pop back out. Temps around here for Friday night looks like they might get into the low 20's again. Will they survive a second freeze if the lose this set of leaves?|
May 3, 2020 10:36 AM CST
Black Locust will likely survive a second freeze - as pretty tough native trees - though they are not going to be particularly happy about it. It takes a lot of stored energy to leaf out (and flower) in the first place. Depleted resources are then used to push dormant (sometimes termed adventitious) buds to replace the first set. It just gets worse as this process repeats itself.
Non-native species (many fruit trees and ornamental landscape plantings) usually fare worse, as they have not typically evolved in this type of temperature fluctuation. Around the Valley here in central KY Bluegrass region, the magnolias, Styrax sp., Quercus dentata, and Tetradium daniellii really took it on the chin during the April 15th subfreezing snap. Likewise, a number of native species were blasted - Cladrastis kentukea, Cercis canadensis, Chionanthus virginicus, Ilex verticillata, Platanus occidentalis, and Cotinus obovatus have had all emerging leaves/flowers/stems destroyed by the freeze.
This is a gardener's life. Plants are living things, and living things can and do die. You live and learn (or not), edit when necessary, and always plant for the hope of the future.
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